5 Things You Should Know: LayerZero Series 70E Static Transfer Switch (3-Pole and 4-Pole)
For over 24 years, LayerZero Power Systems has delivered reliable, mission-critical power distribution solutions prioritizing uptime, safety, and transparency. As digital infrastructure evolves—from hyperscale data centers to financial institutions—the demand for ultra-reliable, operator-safe power switching grows.
The LayerZero Series 70E eSTS, available in 3-pole and 4-pole configurations, is optimized for flexibility, safety, and speed in environments where uptime is non-negotiable.
Here are five key features of the Series 70E eSTS lineup:
1. Lightning-Fast, Seamless Power Transfer
Both 3-pole and 4-pole models deliver automatic source transfers in under a quarter of an electrical cycle, ensuring seamless continuity during utility events, planned maintenance, or equipment faults. This speed protects sensitive systems and prevents costly interruptions, safeguarding operations and data integrity.
2. Tailored to Your Grounding Scheme: 3-Pole and 4-Pole
LayerZero offers 3-pole and 4-pole static transfer switches to suit various grounding strategies. The 3-pole STS switches phase conductors while maintaining a continuous neutral, ideal for systems with a bonded or shared neutral. The 4-pole model switches both phase conductors and the neutral, isolating all sources completely, critical for facilities with separately derived systems, ungrounded designs, or unbalanced loads. Both meet rigorous performance standards, with the right choice depending on your facility’s electrical topology and safety requirements.
3. Uncompromising Operator Safety
Every Series 70E unit prioritizes operator protection with dead-front panels to prevent accidental contact with live components and LayerZero’s SafePanel® technology to reduce arc flash exposure. Remote monitoring and control minimize hands-on access, while integrated interlocks and access controls enhance safety during service. Each unit ensures technician safety without sacrificing performance.
4. Intelligent Power Quality Monitoring
The Series 70E continuously analyzes power quality on both sources, monitoring voltage, frequency, and waveforms in real time for immediate system visibility. Waveform capture during transfer events and detailed event logs support root-cause analysis, while ITIC plotting tools evaluate disturbance severity. These insights enable proactive action to prevent minor issues from escalating, boosting reliability and operational awareness.
.png)
5. Built for High-Density, High-Stakes Loads
Modern infrastructure, from data centers to AI compute facilities and advanced manufacturing, demands transfer switches that handle dense, often unbalanced loads with intelligence and resilience. The Series 70E uses high-speed control for real-time decision-making during transfer events. Built-in diagnostics and self-monitoring ensure optimal performance, while compatibility with sensitive IT and industrial equipment supports complex environments.
The Bottom Line: Purpose-Built Reliability
Whether your infrastructure requires a 3-pole STS for bonded neutral systems or a 4-pole model for isolated source switching, the LayerZero Series 70E delivers reliability, safety, and intelligence. LayerZero avoids one-size-fits-all solutions, designing the Series 70E to meet specific application needs with transparency, real-time diagnostics, and responsive technical support.
LayerZero Power Systems: Designed for Zero Downtime. Zero Compromise.
Need guidance on choosing between a 3-pole or a 4-pole? Talk to a LayerZero expert today - contact us.